Tanning and waterproofing leather.



I placed in clear cold water for twelve hours,

UNITED SATES PATENT oFFio JOSZYP. MOSZYNSKI, OFPHILADELPHIA, PENNSYLVANIA.

TANNING AND WATERPROOFING- LEATHER.

No Drawing.

To all whom it may concern:

Be it known that I, JoszYP MoszYNsKI, a subject of the Emperor of Russia, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in Tanning and Waterproofing Leather, of which the following is a specification.

This invention relates to the process of tanning and waterproofing the leather inv a short space of time and at less expense, making a soft pliable leather. y The ingredients used, and thje method of using the'same, follow :-Concentrated s0- dium sulfid 3; pound, 4O degrees'barkometer test, lime 71- pound, 40 degrees barkometer test, chestnut extract 10 pounds, cutch extract 10 pounds, soda ash, oil of vitriol, oxalic acid, paraffin 1 pound, yellow wax 1 pound, fat suet'2 pounds.

In use, the hide is placed in cold water for one and one-half days, then immersed in a solution of concentrated sodium sulfid and lime, each testing 4.0 degrees, barkometer, for three days at a heat ofv 110 degrees, Fahrenheit. The hide is then shaved and removed and placed in a composition of cutch extract 10 pounds and chestnut extract 10 pounds and water-to test 25 degrees, barkometer, each, from which it is removed and placed in a bath of vitriol oil at 80 degrees, barkometer, for three days, when it is placed in a bath composed of cutch ex-- tract and chestnut extract each testing 25 degrees, barkometer, for twelve days, increasing the strength of the bath every third day ten degrees, barkometer; remove and place in soda ash bath of 25 degrees, barkometer, at 126 degrees Fahrenheit, for 15" minutes, remove and place in vitriol oil at 30 degrees, barkom'eter, for five minutes at 130 degrees, Fahrenheit, then in clear cold water for one-half hour. It is then placed in the dry house for 5 days at a temperature of 145 degrees, Fahrenheit. The paraffin, one pound, yellow wax, one pound and fat suet, 2 pounds, are heated to 130 degrees, mixed thoroughly and brushed on theleather, after a thorough brushing it is placed in the dry house at a temperature of 110 degrees, for

Copies of this patent may be obtained for Specification of Letters Patent.

Patented Oct. 26, 1915.

Application filed July as, 1913. 2 Serial No. 781,699.

ten hours. After thoroughly dry place in for 12 hours, after which time'it is ready for use.

By the use of the above method. the'hair is speedily and thoroughly loosened, and the hides cleaned from grease and other substances Which would prevent them from being tanned quickly. The use, of the other ingredients, as specified, results in a well tanned, water proof and preserved leather in aless period than formerly employed.

I claim The process of tanning leather after the hides have been depiliated, the hide is immersed in a bath consisting of water, cutch extract 10 pounds, chestnut extract 10 pounds said bath to test 25 degrees barkometer, to be then immersed in a bath of vitriol oil testing 30 degrees barkometer from which the leather is taken and placed in a bath composed of cutch extract and chestnut extract and water to test '25 degrees barkometer, the said bath being increased in strength at determined times 10 degrees by v the addition of the aforesaid extracts, then immersed in a soda ash bathtesting 25 'degrees at 126 degrees Fahrenheit for a determined period, when it is placed in vitriol oil of 30 degrees barkometer, from the said bath to cold water for the specified time, and then dried, after which it is ready to be made waterproof.

In testimony whereof I afiix my signature in the presence of the subscribing-witnesses.

JOSZYP MOSZYNSKI.

Witnesses:

WM. MACDONALD,

v TUKUB LEWANDORK, KARMER RUTEoKI.

five cents each, by addressing the "G'ommissioncr of iatents, Washington, I). G. 

